Top 10 65-Gallon Water Heaters for Larger Homes

A faulty water heater can throw your entire household routine off. Cold showers, delayed laundry, and constant frustration are just the start. It’s one of those appliances you don’t appreciate until it stops working.

A 65 gallon water heater provides the capacity most households of 3 to 5 people need for showers, cooking, cleaning, and laundry. Whether you go gas, electric, or heat pump, the right model delivers reliable hot water without constantly running.

Quick Comparison Chart

10 Best 65 Gallon Water Heaters Reviewed

There’s only one use for water heaters, and that’s to supply a consistent flow of hot water inside your home. A single-family home may use an average of 64 gallons of heated water per day for showering, laundry, cooking, and household cleaning chores.

That’s precisely why you need a quality 65 gallon water heater for your home.

1. Rheem Commercial Electric — Best Overall

Rheem’s light-duty commercial 65-gallon water heaters are designed for applications needing moderate amounts of low-cost hot water. These models significantly reduce energy consumption through minimized standby heat loss.

The light-duty electric models come in a range from 30 to 119.9 gallons. They’re available in configurations from 3kW through 12kW and in multiple voltages including 208-Volt, 240-Volt, 277-Volt, and 480-Volt.

These models suit a wide variety of applications. They’re available in both short and tall sizes to fit your specific installation needs.

You can choose either single-phase or 3-phase configurations in either non-simultaneous or simultaneous setups.

The maximum temperature on these models reaches up to 170 degrees Fahrenheit. The proprietary protective steel formulation contributes to a solid tank design.

A unique coat of high-temperature porcelain enamel and thick foam insulation work together to minimize standby heat loss. The long-life heating elements are treated to resist corrosion over time.

The automatic temperature control features a surface-mounted thermostat that cycles on and off to maintain your desired water temperature. This precise control makes sure consistent hot water delivery.

The design is UL certified to meet UL standard 174 as an electric storage-tank water heater and meets both North Carolina and Massachusetts codes. It includes a 3-year limited tank warranty and a 1-year limited parts warranty.

2. Rheem Commercial Gas — Best Gas Model

This commercial gas water heater features a 65 gallon plumbing capacity with a 360,000 BTU rating. The multi-flue tank provides both top and front-side inlet and outlet water connections for flexible installation.

Multiple magnesium anode rods resist corrosion for longer tank life. The tank features moisture-proof fiberglass insulation that surrounds the storage tank completely.

The direct spark to pilot ignition system saves energy by igniting only when there’s a call for heat. Heavy-duty mineral wool insulation surrounds the combustion chamber for additional thermal protection.

The strong tank design uses a universal proprietary steel formulation combined with a patented multi-flue design and 2 coats of porcelain enamel. This results in a superior heat exchanger design that maximizes efficiency.

The unit features an integrated self-diagnostic system control for troubleshooting. Stainless steel precision burners use a raised port design formed from high-chromium stainless steel for long service life.

Each burner assembly slides out like a drawer for quick inspection and maintenance. The space-saver design features short heights and narrow jacket diameters with top, front, and rear water connections for maximum installation flexibility.

3. AO Smith BT-80 — Best Natural Gas

This commercial natural gas water heater is designed to fit into tight retrofit applications while maintaining the features and capacity to meet heavy-duty demands. The tighter your commercial retrofit space, the more you’ll appreciate how Universal’s compact size and multiple water connections simplify installation.

Please note that this model requires a 120-Volt source of power. The small diameters and shorter heights make installation significantly easier in confined spaces.

The handhole cleanout provides easy access for maintenance. The automatic safety shutoff activates if the pilot is extinguished, providing critical safety protection.

It’s completely factory-assembled. The only connections you need to make are water, gas, and vent.

All connections are located at the front or top of the heater, making both service and installation straightforward.

The draft diverter features a low-profile design furnished as standard equipment. The handhole cleanout provides easy cleaning access, and the integral automatic gas shutoff system stops excessive flow when water temperatures rise too high.

The Conservationist BT-80 is a 75,100 BTU input single-flue model with an aluminum anode rod. Fully automatic controls with safety shutoff are accurate and dependable.

The control system requires no electrical connections beyond the power source.

A fixed automatic gas shutoff device provides added safety. Please note this model isn’t recommended for 180 degree Fahrenheit sanitizing applications.

4. Rheem 75 Gal Commercial — Best LP Gas

This medium-duty commercial gas water heater features a compact design with short height and narrow jacket diameter for installation in tight spaces. It uses LP gas as its fuel source.

The proprietary steel formulation includes a unique coat of temperature porcelain enamel to maximize corrosion resistance. Magnesium anode rods are installed for longer tank life.

The automatic controls system is designed to shut off gas if the pilot is extinguished, providing essential safety protection. The space-saver design offers the shortest heights and narrowest jacket diameters in its class.

Top, front, and rear water inlets and outlets provide maximum installation flexibility. The universal line offers water heaters in 75-gallon capacity with different BTU ratings in both natural gas and liquid propane.

This commercial gas water heater carries a 3-year warranty on the tank and 1-year warranty on parts. The unique Blue Diamond glass lining performs as a superior internal coating.

This proprietary coating provides significantly better corrosion resistance compared to the industry-standard glass linings used by other manufacturers. It’s built to withstand the demands of commercial applications while maintaining efficiency.

5. Rheem G75-125 — Best Universal Design

The Rheem G75-125 Universal Gas Commercial water heaters are in particular designed to minimize the difficulty of replacing failed water heaters. They’re equally versatile for brand new installations.

These water heaters are built for applications requiring large quantities of hot water on a regular basis. Precision burners use a unique raised port design formed from higher chromium stainless steel for exceptional durability.

Each burner assembly slides out like a drawer for quick inspection and maintenance access. The exclusive diagnostic system features glowing LED lights that verify the operation sequence step by step.

The low-profile damper minimizes overall product height. Heavy-duty vent hood supports are designed to withstand the rigors of commercial installation environments.

Factory-installed full-port brass drain valves allow faster draining and servicing of the water heater. The compact size and multiple water connections simplify both replacement and new installations.

Choose from 80% thermal efficiency models ranging from 98,000 to 399,900 BTU per hour with a maximum temperature setting of 180 degrees Fahrenheit. Stainless steel Incoloy elements with low-watt density reduce the chance of element burnout and provide longer service life.

The cold water is directed to the heating element near the bottom of the tank, minimizing mixing for long draws of consistently hot water. This product carries a 3-year warranty on the tank and 1-year warranty on parts.

Warranties are only valid when the unit is installed by a properly licensed technician.

6. Westinghouse 80 Gal — Best Electric Residential

The Westinghouse high-efficiency electric water heater features high recovery rates, low standby heat losses, and an aesthetically pleasing faux stainless steel exterior. It combines form and function beautifully.

The special 316L stainless steel inner tank provides superior corrosion resistance and is laser welded for precision manufacturing. It offers the best limited lifetime warranty when you register it online.

High-quality construction and energy-efficient operation are combined in this Westinghouse 80-gallon residential electric water heater. It provides hot water for everyday applications whenever you need it.

The unit pulls long draws of hot water while minimizing energy consumption. A stainless steel dip tube directs cold water to the element near the bottom of the tank, reducing mixing of cold and hot water for consistent temperature delivery.

This water heater is equipped with durable components, low standby heat losses, high recovery rates, and a strong warranty package that sets it apart from competitors.

7. AO Smith 80 Gal — Best Light Service

This light service commercial electric water heater is proudly made in the USA. The DynaClean diffuser system reduces sediment buildup, which significantly extends the overall tank life.

The COREGARD anode rods are made with a stainless steel core that extends the life of the anode rod far beyond standard options. This allows superior tank protection for a longer period than any standard anode rod provides.

Better-flow ball-type brass drain valves make maintenance and service easy and efficient. The thermostat is adjustable, providing a temperature range of 120 degrees to 181 degrees Fahrenheit with a manual reset high-temperature cutoff for safety.

The unit is wired for non-simultaneous single-phase operation. It meets the standby loss requirements of the U.S.

Department of Energy and the current edition of ASHRAE/IES 90.1 standards.

The Blue Diamond glass lining protects against leaks and corrosion. The 80-gallon size is designed especially for light-duty commercial applications with intermittent hot water loads.

8. Stiebel Eltron Accelera 300 — Best Heat Pump

The Stiebel Eltron Accelera 300 is a heat pump water heater that operates on either 240 or 208 volts. When 1 watt of electricity is used, it produces approximately 3.5 watts of heat energy in hot water.

The 80-gallon tank design provides up to 50 gallons of uninterrupted hot water before needing to activate the built-in backup heating element. This allows for 5 people to each take 10-minute showers without running out of hot water.

Installation location depends on your climate. In warmer climates, the ideal placement is in your garage where it can draw warmth from outside air or inside your home where it helps reduce the load on your air conditioner.

In cooler climates, placing it in your basement is ideal. There it performs double duty as a dehumidifier, giving you a drier basement as an added bonus.

The beauty of heat pump water heating technology is that the amount of electrical energy needed to create hot water is dramatically reduced compared to conventional electric tank-type water heaters. The Accelera’s compressor and fan consume only 1kWh of electricity to generate heat equivalent to 3 to 5kWh.

The efficiency of the unit increases with higher ambient air temperatures. This groundbreaking efficiency redefines what a water heater is capable of delivering.

9. Rheem 85 Gal Commercial — Best Heavy Duty

This 85-gallon commercial electric water heater delivers 54,000 watts of heating power. The factory-installed temperature-and-pressure relief valve boosts safety and offers peace of mind.

The unique thermally-fused upper element provides protection against dry firing damage. This model is designed for use in multifamily, hospitality, and institutional facilities with applications requiring high-volume peak demands for hot water.

The long-life tank design features proprietary steel formulation with high-temperature porcelain enamel to maximize corrosion resistance. The resulting tank design delivers superior longevity and performance.

The minimum distance to combustibles is 0 inches from the jacket and 18 inches from the access door. The control box is located at the front of the unit for easy wiring during installation with multiple knockout holes for various conduit sizes.

The unit is factory wired for 3-phase operation with approval for field conversion to single phase. Screw-in stainless steel elements resist burning out and corrosion effectively.

Dual anode rods are installed to make sure long life and continued corrosion resistance. A full-port, full-flow brass drain valve reduces time needed to drain and service the tank.

There’s no assembly required, and it operates on 208 volts. The manufacturer provides a 3-year limited tank warranty and 1-year limited parts warranty.

10. American Standard D-100 — Best Commercial

This heavy-duty water heater from American Standard is widely recognized throughout the world for high-quality plumbing products. The commercial gas D-series model is designed to deliver large quantities of hot water economically using only the most advanced energy-saving techniques.

Precision burners with a raised port design are formed from high-chromium stainless steel for durability. Each burner assembly slides out like a drawer for easy and fast inspection, maintenance, and service.

The diagnostic system features glowing LED lights that verify system operation sequence by sequence. This commercial water heater is engineered for energy savings, extended tank life, and easier installations.

Front, rear, and top water connection models are designed to reduce installation costs significantly. Flue dampers are factory-installed and wired for additional savings during installation.

This model is required for high-demand applications including schools, motels, hotels, laundromats, car washes, hospitals, restaurants, industrial buildings, and multi-housing developments of 25 double baths or 35 single bath units.

The manufacturer provides a 3-year limited tank warranty and a 1-year limited parts warranty.

What To Consider Before Buying a 65 Gallon Water Heater

There are several important factors you should evaluate before selecting a 65 gallon water heater for your home or business. Take a look at the key considerations below.

Fuel Type

The fuel source is one of the most important decisions you’ll make. Electric water heaters are easier to install and have lower upfront costs, while gas models heat water faster and typically cost less to operate.

LP gas is an option for locations without natural gas lines, and heat pump models offer the best energy savings over time.

Tank Capacity

While this guide focuses on 65 gallon models, many of the top options range from 65 to 100 gallons. A single-family home of 3 to 5 people typically needs a 65 gallon tank.

Larger households or commercial applications may benefit from 75 to 100 gallon models for consistent hot water supply during peak demand.

Energy Efficiency

Look for the energy factor rating when comparing models. Higher energy factors mean lower operating costs over the life of the unit.

Heat pump water heaters offer the best efficiency with energy factors of 2.0 or higher, while conventional electric models typically range from 0.90 to 0.98 and gas models from 0.60 to 0.80.

Installation Requirements

Consider your available space, electrical or gas connections, and ventilation needs. Gas water heaters require proper venting, while electric models need the correct voltage.

Commercial models may require professional installation, and some warranties are only valid when installed by a licensed technician.

Warranty Coverage

Most commercial water heaters come with a 3-year limited tank warranty and a 1-year limited parts warranty. Residential models like the Westinghouse offer a limited lifetime warranty when registered online.

A longer warranty generally indicates better build quality and manufacturer confidence.

How We Evaluated

We evaluated each 65 gallon water heater based on several key criteria to help you make a good decision. Here is what we looked at:

• Heating Performance: We considered BTU ratings for gas models and wattage for electric models, along with recovery rates and maximum temperature settings.
• Build Quality: Tank construction materials, glass lining quality, anode rod type, and insulation were all evaluated for long-term durability.
• Energy Efficiency: Energy factor ratings, standby heat loss reduction features, and innovative technologies like heat pump systems were compared across all models.
• Installation Flexibility: We looked at available water connections, size options, voltage configurations, and ease of installation for both new and replacement applications.
• Warranty & Value: Warranty coverage, price relative to features, and overall value for the money were factored into each rating.